Greer is a city in Greenville and Spartanburg counties in the U.S. state of South Carolina. The population was 25,515 as of the 2010 census and had risen to an estimated 28,365 as of 2015. Each day, more than three times that number of people pass through the city on the two highways which run through the city. The majority of the city is in Greenville County and is part of the Greenville–Anderson–Mauldin Metropolitan Statistical Area.The city is additionally part of the Greenville-Spartanburg-Anderson, SC Combined Statistical Area in Upstate South Carolina.Greer is adjacent to Greenville-Spartanburg International Airport, which serves Greenville, Spartanburg, and the Upstate. Greer is also the site of the only BMW manufacturing facility in North America. According to a June 2005 article in The Greenville News, BMW's Greer plant employs about 4,600 people, and has attracted dozens of suppliers in South Carolina, providing jobs for more than 12,000 people.